Understanding the Different Scans Used in Bladder Cancer

By Bladder Cancer Canada | Resources | 28 July, 2026 | 0

Written by Ali Hamade, Medical Student, Dalhousie University & Bladder Cancer Canada Volunteer

Being told you may have bladder cancer can make every test feel urgent. Many people worry that if they are not getting a certain scan, something might be missed. That fear is understandable. In Canada, though, scans are usually chosen carefully. Different tests answer different questions. Some help find a cause of blood in the urine. Others help show whether cancer has spread outside the bladder. Some are used when another image is unclear, or when a person cannot safely have contrast dye or extra radiation. Access can also vary depending on the province, hospital, and imaging capacity at your local centre.

A very important point is that scans do not replace cystoscopy or TURBT. Bladder cancer diagnosis still depends on looking directly inside the bladder and examining tissue under a microscope. That is why repeat cystoscopies or repeat TURBTs may still be needed, even if you have already had imaging.

CT Scan

A CT scan uses x-rays and a computer to create detailed cross-sectional pictures of the body. In bladder cancer, CT of the abdomen and pelvis is commonly used to check the urinary system for tumours or blockages and to see whether cancer may have spread to nearby lymph nodes, the liver, or tissues around the bladder. A CT of the chest may also be used if the team needs to check the lungs.

This is one of the most common imaging tests in bladder cancer because it gives a broad overview quickly. It may be used during diagnosis, staging, or later if there is concern about recurrence or spread.

CT Urogram

A CT urogram is a special type of CT scan for bladder cancer that gives a closer look at the kidneys, ureters, and bladder. It is especially useful when someone has blood in the urine because it can help look for tumours or other causes of bleeding anywhere along the urinary tract, not just inside the bladder.

This is often why a person gets a CT urogram early in the workup. The goal is not only to look at the bladder, but also to make sure there is not another problem higher up in the system.

MRI

An MRI uses magnets and radio waves rather than x-rays. In bladder cancer, it may be used to get a better look at soft tissues and to assess whether cancer has spread outside the bladder. MRI can also be helpful when CT findings are unclear or when doctors want a different kind of detail for bladder cancer staging and treatment planning.

A related test is MR urography, which is a specialized MRI designed to look more closely at the kidneys, ureters, and bladder. In Canada, it is used more selectively than CT urography and is usually considered when CT urography is not the best option. So, while CT urography is still more common, MR urography can be a useful alternative in specific situations.

If your doctor orders an MRI instead of a CT, it does not mean something was missed. Usually, it means they want more detail or need a different type of image to answer a specific question.

Ultrasound

An ultrasound uses sound waves, not radiation. It is a simple and non-invasive way to look at the kidneys and bladder. Ultrasound can sometimes show whether there is swelling, blockage, or another obvious abnormality in the urinary tract.

Because it is easy to perform and does not require contrast, ultrasound is often used early. But it does have limits. It is not as sensitive as a CT for some small tumours or upper tract problems. That is why someone may still need cystoscopy or CT even if an ultrasound looks normal.

Chest X-Ray

A chest x-ray is a quick, simple test used to look at the lungs. In bladder cancer, it may be used if doctors want to check for spread to the chest. It is more limited than a CT scan, so it is usually used selectively rather than as the main staging test for everyone.

PET Scan

A PET scan shows how active cells are by using a small amount of radioactive tracer. It can sometimes help identify cancer that has spread. But in bladder cancer, PET is not a routine scan for everyone. It is usually reserved for specific situations, such as when there is concern about metastatic disease or when other imaging leaves an important question unanswered. It is not standard follow-up after BCG for every patient.

Bone Scan

A bone scan is different from a bone density test. In bladder cancer, a bone scan may be used if there are symptoms like bone pain or if bloodwork suggests concern that cancer could have spread to the bones. It is not usually done routinely for everyone.

A bone density scan, by contrast, is used to measure bone strength and look for osteoporosis. It is not a standard bladder cancer staging test.

Why Repeat Cystoscopies or Repeat TURBTs Are Still Needed

This is one of the most common questions. Why not just do scans? The answer is that bladder cancer often grows on the inner lining of the bladder, and some tumours can be small, flat, or difficult to fully assess on imaging. A cystoscopy lets the urologist look directly at the bladder lining, and TURBTs provides tissue for diagnosis and staging. Scans are excellent for the kidneys, ureters, lymph nodes, lungs, bones, and tissues around the bladder, but they do not replace direct inspection or biopsy.

Wait Times for Bladder Cancer Tests and Results

One of the hardest parts of bladder cancer testing is the waiting. In Canada, there is no single standard wait time for scans or scan results. How long it takes can vary based on where you live, which hospital or imaging centre you use, how urgent the test is, and what equipment and staffing are available locally.

As a general rule, if your care team gave you a timeline, it is reasonable to contact them once you have passed it. If they did not give you a timeline, checking in after about one week for a booking update is reasonable. If the scan has already been done but you have not heard the result, it is also reasonable to follow up about one week after the test, unless they told you to expect results later. If your symptoms are worsening, it is appropriate to call earlier.

Bottom line: Understanding the Role of Different Bladder Cancer Scans

In bladder cancer, each scan has a specific job. CTs and CT urograms are often used to investigate bleeding and stage disease. MRIs gives different and sometimes more detailed soft-tissue information. An ultrasound is less invasive but more limited. Chest x-rays and bone scans are used selectively. PET scans can be helpful in certain cases, but it is not routine for everyone. And no scan replaces cystoscopy and TURBT, because those remain central to diagnosing and monitoring bladder cancer.

Understanding the different scans used in bladder cancer can help patients feel more informed and prepared throughout diagnosis, staging, and follow-up care. If you are navigating bladder cancer testing or treatment, Bladder Cancer Canada offers educational resources and support to help you better understand your care journey.